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Cervical pessary to prevent preterm birth in asymptomatic high-risk women: a systematic review and meta-analysis.
Conde-Agudelo A, Romero R, Nicolaides KH.
Am J Obstet Gynecol 2020;223:42-65.e2. pdf -
A Randomized Trial of a Cervical Pessary to Prevent Preterm Singleton Birth.
Nicolaides KH, Syngelaki A, Poon LC, Picciarelli G, Tul N, Zamprakou A, Skyfta E, Parra-Cordero M, Palma-Dias R, Rodriguez Calvo J.
N Engl J Med 2016;374:1044-52. pdf -
Cervical pessary placement for prevention of preterm birth in unselected twin pregnancies: a randomized controlled trial.
Nicolaides KH, Syngelaki A, Poon LC, de Paco Matallana C, Plasencia W, Molina FS, Picciarelli G, Tul N, Celik E, Lau TK, Conturso R.
Am J Obstet Gynecol 2016;214:3.e1-9. pdf